JP2014072923A - Harness insertion structure - Google Patents

Abstract

[PROBLEMS] To dispose a wire harness by a shortest path through which the wire harness is inserted into an opening having an irregular cross section whose width is narrower than the outer diameter of a standard circular cross section of the wire harness in the vicinity. To provide a harness insertion structure capable of realizing a cable and reducing the length of the wire harness.
A harness insertion structure in which a wire harness is inserted into an opening having an irregular cross-section narrower than the outer diameter of a standard circular cross-section of the wire harness, and the wire harness is inserted through the opening. In the range of a predetermined length, the outer shape of the electric wire group that passes through the opening 119 of the wire harness 127 is formed in the deformed shape portion 130 that is pressed into a cross-sectional shape that can be inserted into the opening 119 with resin.
[Selection] Figure 3

Description

  The present invention relates to a harness insertion structure for inserting a wire harness into an opening of a housing.

  FIG. 6 shows a vehicle 110 and a conventional wire harness 120 routed to the vehicle 110.

  As shown in FIG. 6, the wire harness 120 includes a first trunk harness 121, a second trunk harness 122, a third trunk harness 123, a fourth trunk harness 124, and a first branch harness 125. And a second branch harness 126.

  As shown in FIG. 6, the first trunk harness 121 is a wire harness that is routed from the starting point A at the center of the vehicle body to the first branch point B1 of the vehicle body side edge 112. The first main harness 121 is routed from the starting point A along the vehicle width direction to the bottom of the vehicle body, and near the center pillar (not shown), the harness routing space 115 on the vehicle body side edge 112 side (see FIG. 2). ).

  The second trunk harness 122 is a wire harness routed from the first branch point B1 to the first terminal point C that is a position near the front wheel on the vehicle body side edge portion 112.

  The third trunk harness 123 is a wire harness routed from the first branch point B1 to the first via point D1, which is near the rear wheel on the vehicle body side edge 112.

  The fourth trunk harness 124 is a wire harness routed from the first via point D1 to the second terminal point G at the rear of the vehicle body via the second via point E and the third via point F. It is.

  The first branch harness 125 branches from the second branch point D2 set near the first via point D1 on the third trunk harness 123, and is a third terminal located on the rear seat side. It is a wire harness routed to point H.

  The second branch harness 126 is a wire harness that branches from the third via point F on the fourth trunk harness 124 and is routed to the fourth terminal point I located at the vehicle body ceiling.

  In each trunk harness 121, 122, 123, 124 constituting the wire harness 120 and each branch harness 125, 126, at least a predetermined length range through which an opening of a housing such as a vehicle body panel or a frame is inserted is as follows. As disclosed in No. 1, the structure is often covered with a protector in order to prevent the wire from being damaged by rubbing with the casing. As disclosed in the following Patent Document 1, many protectors have a cylindrical shape such as a corrugated tube, and as a result, the outer shape of the wire harness often has a circular cross section (Patent Document 1 below). reference).

  FIG. 2 shows a housing structure at the bottom of the vehicle body from the starting point A of the vehicle 110 shown in FIG. 6 to the vehicle body side edge 112. In FIG. 2, an arrow W indicates the vehicle body width direction, and an arrow L indicates the vehicle body longitudinal direction.

  A pair of reinforcing beam portions 114a and 114b are formed in parallel on the bottom wall plate 114 of the vehicle body along the vehicle body width direction. The ends of the pair of reinforcing beam portions 114 a and 114 b are connected to the vehicle body side edge portion 112. The vehicle body side edge portion 112 is provided with a harness wiring space 115 extending along the vehicle body longitudinal direction. The second trunk harness 122 and the third trunk harness 123 are routed in the harness routing space 115.

  Although not shown in FIG. 2, the space between the bottom wall plate 114 and the harness wiring space 115 at the vehicle body side edge 112 is partitioned by a side garnish that is an interior wall (housing). .

  The starting point A of the first trunk harness 121 is set near the middle of one reinforcing beam portion 114a located on the front side of the vehicle body. In addition, a center pillar is disposed in the vicinity of the end of one of the reinforcing beam portions 114a. Therefore, a relatively large opening communicating with the harness routing space 115 can be secured in the vicinity of the end of the other reinforcing beam portion 114b. However, in the vicinity of the end of the one reinforcing beam portion 114a, the first main harness is provided. Only an opening narrower than the outer diameter of the circular cross section 121 can be secured.

  Therefore, conventionally, as shown in FIG. 2, the first main harness 121 extending from the starting point A is routed along the reinforcing beam portion 114a to the vicinity of the vehicle body side edge portion 112, and then the reinforcing beam portion. As shown in FIG. 3A, a part of the side garnish 117 in the vicinity of the end of the reinforcing beam portion 114b is cut away so as to be larger than the outer diameter of the circular section of the first trunk harness 121. A wide opening 118 is formed and introduced into the harness wiring space 115 from the opening 118.

  In other words, conventionally, the wire harness 120 (first trunk harness 121) is generally reached to a position where an opening 118 having a width wider than the outer diameter of the circular cross section of the wire harness 120 (first trunk harness 121) can be secured. ) Is extended and routed so that the wire harness 120 (first trunk harness 121) is routed on each necessary route.

JP2012-5217A

  However, as described above, if the wire harness adopts the harness insertion structure in which the opening is inserted with the standard circular cross section, only an opening smaller than the standard circular cross section of the wire harness can be secured in the vicinity. In the environment, there is a problem that the wire harness must be detoured to a far position where an opening larger than the standard circular cross section can be secured, leading to an increase in length and size of the wire harness.

  Accordingly, an object of the present invention is to solve the above-mentioned problems, and when there is only an opening having an irregular cross section narrower than the outer diameter of the standard circular cross section of the wire harness in the vicinity, the opening of the irregular cross section is present. An object of the present invention is to provide a harness insertion structure capable of shortening the length of the wire harness by realizing the wiring of the wire harness through the shortest path through which the wire harness is inserted.

The above-described object of the present invention is achieved by the following configuration.
(1) A harness insertion structure in which the wire harness is inserted into an opening of an irregular cross section narrower than the outer diameter of the circular cross section of the wire harness,
In a predetermined length range of the wire harness that passes through the opening, an outer shape of the group of electric wires that pass through the opening of the wire harness is pressed into a cross-sectional shape that can be inserted into the opening by resin. The harness insertion structure characterized by having formed.

  (2) The harness insertion structure according to (1), wherein the deformed portion is formed in a predetermined deformed cross section by hot melt or foamed plastic.

  (3) The harness insertion structure according to (1) or (2), wherein the irregularly formed portion is formed by a small molding machine that can be brought into a wiring work site of the wire harness.

  According to the configuration of the above (1), the outer shape of the wire harness is partially formed in the deformed shape portion of the deformed cross section narrower than the outer diameter of the standard circular cross section of the wire harness. Let the part be a part that is inserted through the opening.

  Therefore, when there is only an opening with an irregular cross section that is narrower than the outer diameter of the standard circular cross section of the wire harness in the vicinity, the wiring harness is routed through the shortest path through which the wire harness is inserted. Can be realized. As a result, the length of the wire harness is compared with the conventional harness insertion structure that bypasses the wire harness and has an opening wider than the outer diameter of the standard circular cross section of the wire harness. The wire harness can be reduced in size.

  According to the configuration of the above (2), the irregularly formed part that is partially formed in the middle of the wire harness can be inserted through the opening, and the wire harness is not damaged by rubbing with the opening. Since it only bundles the electric wire group which comprises, it does not need so much precision, and it can manufacture easily and can aim at reduction of cost by forming by shaping | molding with a hot melt or foamed plastic.

  In addition, when forming the irregularly shaped part on site, it may be molded by an injection molding machine, or by using a simpler hot melt or foamed plastic to improve the productivity of the irregularly shaped part. be able to.

  According to the configuration of (3) above, the irregularly shaped part can be formed flexibly at the site, and the insertion of the wire harness into the irregularly shaped cross section opening is considered in consideration of assembly errors and individual differences. It becomes possible to implement as efficiently.

  According to the harness insertion structure of the present invention, the outer shape of the wire harness is partially formed in the deformed shape portion of the deformed cross section narrower than the outer diameter of the standard circular cross section of the wire harness. Let the part be a part that is inserted through the opening.

  Therefore, when there is only an opening with an irregular cross section that is narrower than the outer diameter of the standard circular cross section of the wire harness in the vicinity, the wiring harness is routed through the shortest path through which the wire harness is inserted. Can be realized. As a result, the length of the wire harness is compared with the conventional harness insertion structure that bypasses the wire harness and has an opening wider than the outer diameter of the standard circular cross section of the wire harness. The wire harness can be reduced in size.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a perspective view of an embodiment of a vehicle in which a wire harness is routed using the harness insertion structure according to the present invention. FIG. 2 is a perspective view showing a housing structure at the bottom of the vehicle body on which the wire harness shown in FIG. 1 is routed. 3A is a cross-sectional view of an opening through which a wire harness is inserted by a conventional harness insertion structure, and is a cross-sectional view taken along the line X1-X1 of FIG. 2, and FIG. 3B is a cross-sectional view of the harness insertion structure of one embodiment of the present invention. It is sectional drawing of the opening part by which the wire harness was penetrated, and is X2-X2 sectional drawing of FIG. FIG. 4 is an explanatory view of a specific shape of the deformed shape portion formed on the wire harness with the harness insertion structure of one embodiment of the present invention, FIG. 4 (a) is a rectangular cross section, FIG. A triangular cross-section, FIG. FIG. 5 is an overall perspective view of a molding machine used for manufacturing the embodiment of the present invention. FIG. 6 is a perspective view of a vehicle in which a wire harness is routed using a conventional harness insertion structure.

  Hereinafter, a preferred embodiment of a harness insertion structure according to the present invention will be described in detail with reference to the drawings.

  1 to 4 show an embodiment of a harness insertion structure according to the present invention, and FIG. 1 is a perspective view of an embodiment of a vehicle in which a wire harness is routed using the harness insertion structure according to the present invention. 2 is a perspective view showing a housing structure at the bottom of the vehicle body on which the wire harness shown in FIG. 1 is routed, and FIG. 3A is a cross-sectional view of an opening through which the wire harness is inserted by the conventional harness insertion structure. 2 is a cross-sectional view taken along line X1-X1 of FIG. 2, and FIG. 3B is a cross-sectional view of the opening through which the wire harness is inserted by the harness insertion structure of the embodiment of the present invention. 4 is an explanatory view of a specific shape of the irregularly formed portion formed on the wire harness in the harness insertion structure of one embodiment of the present invention.

  In the harness insertion structure of this embodiment, as shown in FIG. 1, the wire harness 120 </ b> V routed to the vehicle 110 of the embodiment includes a first trunk harness 127, a second trunk harness 128, 3 main line harness 129, fourth main line harness 124, first branch harness 125, and second branch harness 126.

  The vehicle 110 has the same configuration as that shown in FIG.

  The wire harness 120V of this embodiment is an improvement of a part of the wire harness 120 shown in FIG.

  As shown in FIG. 1, the first trunk harness 127 in the wire harness 120 </ b> V is a wire harness that is routed from the starting point A at the center of the vehicle body to the first branch point B <b> 2 of the left vehicle body side edge 112. The first trunk harness 127 is routed from the starting point A along the vehicle width direction to the bottom of the vehicle body, and near the center pillar (not shown), the harness routing space 115 on the vehicle body side edge 112 side (see FIG. 2). ).

  The second main line harness 128 is a wire harness routed from the first branch point B2 to the first terminal point C that is a position near the front wheel on the vehicle body side edge portion 112.

  The third trunk harness 129 is a wire harness routed from the first branch point B2 to the first via point D1, which is a position closer to the rear wheel on the vehicle body side edge portion 112.

  The fourth trunk harness 124 is a wire harness routed from the first via point D1 to the second terminal point G at the rear of the vehicle body via the second via point E and the third via point F. It is.

  The first branch harness 125 branches from the second branch point D2 set near the first via point D1 on the third main line harness 129, and is a third terminal located on the rear seat side. It is a wire harness routed to point H.

  The second branch harness 126 is a wire harness that branches from the third via point F on the fourth trunk harness 124 and is routed to the fourth terminal point I located at the vehicle body ceiling.

  In each trunk harness 128, 129, 124, and each branch harness 125, 126 constituting the wire harness 120V, at least a predetermined length range through which the opening of the casing such as a body panel or a frame is inserted is rubbed with the casing. In order to prevent the contamination of the electric wire due to, the structure is often covered with a protector. And many protectors have a corrugated tube and the cylindrical shape of exclusive design, As a result, the external shape of these wire harnesses has a circular cross section in many cases.

  On the other hand, in the case of the first trunk harness 127 constituting the wire harness 120 </ b> V, a predetermined length range near the first branch point B <b> 2 is formed in the deformed shape portion 130.

  FIG. 2 shows a housing structure at the bottom of the vehicle body from the starting point A of the vehicle 110 shown in FIG. 1 to the vehicle body side edge 112. In FIG. 2, an arrow W indicates the vehicle body width direction, and an arrow L indicates the vehicle body longitudinal direction.

  A pair of reinforcing beam portions 114a and 114b are formed in parallel on the bottom wall plate 114 of the vehicle body along the vehicle body width direction. The ends of the pair of reinforcing beam portions 114 a and 114 b are connected to the vehicle body side edge portion 112. The vehicle body side edge portion 112 is provided with a harness wiring space 115 extending along the vehicle body longitudinal direction. The second trunk harness 128 and the third trunk harness 129 are routed in the harness routing space 115.

  Although not shown in FIG. 2, the space between the bottom wall plate 114 and the harness wiring space 115 at the vehicle body side edge 112 is partitioned by a side garnish that is an interior wall (housing). .

  The starting point A of the first trunk harness 127 is set near the middle of one of the reinforcing beam portions 114a located on the front side of the vehicle body. In addition, a center pillar is disposed in the vicinity of the end of one of the reinforcing beam portions 114a. Therefore, a relatively large opening communicating with the harness routing space 115 can be secured in the vicinity of the end of the other reinforcing beam portion 114b. However, in the vicinity of the end of the one reinforcing beam portion 114a, the first main harness is provided. Only the opening 119 having a modified cross-section narrower than the outer diameter of the 127 circular cross-section can be secured.

  Therefore, in the present embodiment, the irregularly shaped portion is used as a portion for inserting the irregularly shaped opening 119 (see FIG. 3B) having a narrower width than the outer diameter of the circular cross section of the first trunk harness 127. 130 is formed.

  This deformed portion 130 is formed by pressing the outer shape of the wire group 131 that passes through the opening 119 having the deformed cross section of the first main wire harness 127 into a cross sectional shape that can be inserted into the opening 119 having the deformed cross section. It is.

  The irregularly shaped portion 130 is formed in a housing such as a side garnish such as a rectangular cross section shown in FIG. 4A, a triangular cross section shown in FIG. 4B, or a saddle-shaped cross section shown in FIG. It can be set to an arbitrary shape corresponding to the shape of the opening 119 having an irregular cross section. These shapes only need to be formed in a shape that can be inserted through the opening 119 having an irregular cross section, and may not be accurately formed in a shape similar to the opening 119, and high accuracy is not required. Moreover, if it is a wiring part which does not need protection of the electric wire group 131, an irregular cross-sectional shape may be formed in the state which the electric wire group 131 exposed.

  In FIG. 4, reference numeral 131 denotes an electric wire group that constitutes the first trunk harness 127, and reference numeral 132 denotes a resin layer that presses the electric wire group 131 into a predetermined irregular cross-sectional shape. As long as the resin layer maintains an irregular cross-sectional shape, bubbles may be mixed therein.

  The irregularly shaped portion 130 is formed by cutting out a protector or a jacket having an outer diameter of a standard circular cross section in the first main wire harness 127, and appropriately forming a bundle of loose covered electric wire groups with a predetermined irregular shape by a resin material. It is pressed into a shape.

  In the case of the present embodiment, the deformed portion 130 is formed into a predetermined deformed cross section by hot melt or foamed plastic.

  Furthermore, it is preferable to form the odd-shaped part 130 by a small molding machine that can be brought into the wiring work site of the wire harness 120V.

  In the case of the harness insertion structure according to the embodiment described above, the outer shape of the first main wire harness 127 is partially deformed with a narrower width than the outer diameter of the standard circular cross section of the first main wire harness 127. The deformed shape portion 130 is formed as a portion that is inserted into the opening 119 having a deformed cross section of the housing.

  Therefore, when there is only an opening 119 having a modified cross section narrower than the outer diameter of the standard circular cross section of the wire harness 120V in the vicinity, the shortest length for inserting the first main harness 127 into the opening 119 having the modified cross section. The wiring harness 120V can be routed by the route. As a result, when compared with the conventional harness insertion structure in which the opening 118 having a width wider than the outer diameter of the standard circular cross section of the wire harness 120V is bypassed and the wire harness 120V is inserted, the wire harness 120V is bypassed. The length of one trunk harness 127 can be shortened, and the wire harness 120V can be reduced in size.

  Further, in the case of the harness insertion structure of the embodiment described above, the irregularly shaped portion 130 partially formed in the middle of the first trunk harness 127 can be inserted through the opening 119 and can be connected to the opening 119. Since the wire group 131 constituting the first trunk harness 127 is only bundled so that the wire harness 120V is not damaged by rubbing, the accuracy is not required so much, and it is possible to perform injection molding, hot melt, or molding by foamed plastic. By forming, manufacturing can be facilitated and cost can be reduced.

  In addition, when forming the irregularly shaped part 130 on site, it may be molded by an injection molding machine, or by using a simpler hot melt or foamed plastic, the productivity of the irregularly shaped part 130 can be increased. Can be improved.

  Further, in the case of the harness insertion structure of the embodiment described above, the irregularly shaped portion 130 can be formed flexibly at the site, and an opening of the irregular cross section of the wire harness 120V is taken into account in consideration of assembly errors and individual differences. The insertion into the section 119 can be efficiently performed as a field work.

Next, an example of a manufacturing apparatus for the irregularly shaped portion 130 according to the present embodiment will be described.
As shown in FIG. 5, a micro-molding machine that can be operated by one worker without external power such as an electric motor, as shown in FIG. And a mold clamping device, and an injection molding machine 145 for injecting molten resin into the mold 143 under pressure.

  The injection molding machine 145 has a heating cylinder 147 provided with a heater for heating and melting synthetic resin such as polypropylene, a plunger 149 for injecting molten resin in the heating cylinder 147 from a nozzle (not shown), and a plunger 149. An injection cylinder 151, a handle 153 that drives the injection cylinder 151, and a temperature controller 155 that maintains the heating temperature of the heating cylinder 147 at a desired temperature, and these are device columns 159 that stand on a pedestal 157. It is supported by.

  Note that the micro molding machine in this embodiment has a maximum amount of resin that can be molded by one injection molding of about 10 g, and an air cylinder or a link is attached when the mold 143 is clamped. It can be used manually. Therefore, the injection molding machine 145 as a micro molding machine may drive the injection cylinder 151 by external power such as an electric motor or air.

  The mold 143 is a horizontal split mold having a lower mold 161 and an upper mold 167, and the lower mold 161 and the upper mold 167 define a cavity for differently formed shapes. The upper die 167 is provided with a gate (not shown) that allows the irregularly shaped part cavity and the nozzle of the injection molding machine 145 to communicate with each other.

  That is, in the mold 143, the lower mold 161 and the upper mold 167 are combined to form a deformed-shaped part cavity, and the molten resin is injected into the molding space from the gate, whereby the deformed-shaped part 130 is formed. The

The capacity of the molding space when the mold 143 is clamped is several tens of cm ³ . In the present embodiment, the mold 143 has been described as having a horizontal split mold, but it may be a vertical split mold.

  Further, the irregularly shaped portion 130 may be formed by a stationary injection molding machine instead of the above-described micro molding machine.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, the specific shape of the irregularly shaped portion can be set to an arbitrary structure other than the specific example shown in FIG.

  In addition, it is also conceivable that the irregularly shaped portion 130 is formed into a predetermined cross-sectional shape later by using the two-color molding method.

  Here, the features of the embodiment of the harness insertion structure according to the present invention described above are briefly summarized in [1] to [3] below.

[1] A harness insertion structure in which the wire harness (127) is inserted through an opening (119) having an irregular cross section narrower than the outer diameter of the circular cross section of the wire harness (127),
In the range of the predetermined length of the wire harness (127) that passes through the opening (119), the outer shape of the electric wire group (131) that passes through the opening (119) of the wire harness (127) is made of resin by the resin. A harness insertion structure characterized in that the harness insertion structure is formed in a deformed shape portion (130) pressed into a cross-sectional shape that can be inserted into the portion (119).

  [2] The harness insertion structure according to [1], wherein the deformed portion (130) is formed in a predetermined deformed cross section by hot melt or foamed plastic.

  [3] The above-mentioned [1] or [2], wherein the irregularly shaped portion (130) is formed by a small molding machine that can be brought into a wiring work site of the wire harness (127). Harness insertion structure.

119 Opening of irregular cross section 120V wire harness 127 First trunk wire harness (wire harness)
130 Deformed part 131 Wire group

Claims (3)

A harness insertion structure for inserting the wire harness into an opening of an irregular cross section narrower than the outer diameter of the circular cross section of the wire harness,
In a predetermined length range of the wire harness that passes through the opening, an outer shape of the group of electric wires that pass through the opening of the wire harness is pressed into a cross-sectional shape that can be inserted into the opening by resin. The harness insertion structure characterized by having formed.   The harness insertion structure according to claim 1, wherein the deformed portion is formed in a predetermined deformed cross section by hot melt or foamed plastic.   The harness insertion structure according to claim 1 or 2, wherein the irregularly shaped portion is formed by a small molding machine that can be brought into a wiring work site of the wire harness.

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